Just recieved the VEMS unit... Was very impressed by the quality of everything, it was all very professional.
Going to be reading over the documentation/manual once again (I've read it at least 10+ times) but I want to make sure it gets done the first time. Then I'm going to cross-reference to the factory wiring harness what needs to be connected and what can be removed.
The project is a 1991 VW Passat Wagon with a VR6 swap, that is currently turbocharged using factory engine management that has a custom dyno tuned chip.
It is an OBD1 motor originally from a Corrado (so yes it has a dizzy). For now, I will be using the dizzy, but along with that I will be using all the factory sesors to have fully sequential injection (so that means using the VR crank sensor on the 60-2 wheel allong with the 1 window dizzy with the hal sensor in the distributor). If anything I will be going at least semi-sequential at the beginning.
Got the VEMS ECU to boot up with the LCD attached. Working like a charm. Inital wiring will start hopefully tomorrow!
Started on the pre-wiring of the VEMS ECU, have almost everything connected. Once I had the DSUB (COM PORT CABLE) connected, I decided to see if I could connect to Mega Tune... I downloaded the newest version, and the last stable version and with both I'm getting errors from Megatune that the signature is not the same.
The firmware that was shipped with my VEMS unit was 1.0.38. I then attempted to up/downgrade the firmware versions until I wasn't getting this error anymore, and now with 1.0.32 it seems to be ok. But the more I look through the WIKI the more I find people being able to use the newest 1.0.38 firmware, yet I'm not.
Q: Can anyone point me into the proper direction so that I can get megatune to run with the 1.0.38 version of the firmware? I tried the 1.0.23 version which I'm guessing is the last "stable" version according to the FirwareChanges WIKI, but the LCD comes out all screwed up.
A: Start MegaTune either way, even if it complains about the "signature". Go the menu : Settings -> Basic Settings. Now check that your "Map Range Unit" and "Table kPa Unit" are set correctly.